1、IEEE Standard for the Electrical Protection of Communication Facilities Serving Electric Supply Locations Through the Use of Neutralizing Transformers Sponsored by the Power System Communications Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 15 March 2013 IEEE Power and Energy Society IEE
2、E Std 487.4-2013 IEEE Std 487.4-2013 IEEE Standard for the Electrical Protection of Communication Facilities Serving Electric Supply Locations Through the Use of Neutralizing Transformers Sponsor Power System Communications Committee of the IEEE Power and Energy Society Approved 6 February 2013 IEEE
3、-SA Standards Board Approved 7 October 2014American National Standards InstituteAbstract: Engineering design procedures for the electrical protection of communication facilities serving electric supply locations through the use of neutralizing transformers are presented in this standard. Keywords: e
4、lectric supply locations, IEEE 487.4, neutralizing transformers power stations, protection, wire-line communications The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2013 by The Institute of Electrical and Electronics Engineers, Inc. A
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17、nsing terms or conditions provided in connection with submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement o
18、f such rights, is entirely their own responsibility. Further information may be obtained from the IEEE Standards Association. Copyright 2013 IEEE. All rights reserved. vi Participants At the time this IEEE standard was completed, the Wire Line Working Group had the following membership: Percy Pool,
19、Co-Chair Larry Young, Co- Chair and Secretary Ben Bloom Steve Blume Joe Boyles Tim Conser Bhimesh Dahal Jean de Seve Ernest Duckworth John Fuller Ernest Gallo Dave Hartmann Dan Jendek Richard Knight Randall Mears Mark Tirio Thomas Vo John Wruble The following members of the individual balloting comm
20、ittee voted on this standard. Balloters may have voted for approval, disapproval, or abstention. William Ackerman David Bassett Steve Blume Claude Brisson Gustavo Brunello William Byrd Tim Conser Brian Cramer Ernest Duckworth John Fuller Doaa Galal Frank Gerleve Jalal Gohari Randall Groves Edward Ha
21、re Dave Hartmann Yuri Khersonsky Richard Knight Joseph L. Koepfinger Jim Kulchisky Marc Lacroix Michael Lauxman Lawrenc Long Greg Luri Michael Maytum William Mccoy Joseph Mears Jerry Murphy H. Nerhood Michael S. Newman Charles Ngethe Gary Nissen Lorraine Padden Donald Parker Percy Pool Jesse Rorabau
22、gh Bartien Sayogo Gil Shultz Mark Simon James Smith William Taylor John Vergis Kenneth White James Wilson John Wruble Larry Young When the IEEE-SA Standards Board approved this standard on 5 February 2013, it had the following membership: John Kulick, Chair Richard H. Hulett, Past Chair Konstantinos
23、 Karachalios, Secretary Masayuki Ariyoshi Peter Balma Farooq Bari Ted Burse Wael William Diab Stephen Dukes Jean-Philippe Faure Alexander Gelman Mark Halpin Gary Hoffman Paul Houz Jim Hughes Michael Janezic Joseph L. Koepfinger* David J. Law Oleg Logvinov Ron Petersen Gary Robinson Jon Walter Rosdah
24、l Adrian Stephens Peter Sutherland Yatin Trivedi Phil Winston Yu Yuan *Member Emeritus Copyright 2013 IEEE. All rights reserved. vii Also included are the following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative Patrick Gibbons I
25、EEE Standards Program Manager, Document Development Erin Spiewak IEEE Standards Program Manager, Technical Program Development Copyright 2013 IEEE. All rights reserved. viiiIntroduction This introduction is not part of IEEE Std 487.4-2013, IEEE Standard for the Electrical Protection of Communication
26、 Facilities Serving Electric Supply Locations Through the Use of Neutralizing Transformers. Wire-line communication facilities serving electric supply locations often require special high-voltage protection against the effects of fault-produced ground potential rise (GPR) or induced voltages, or bot
27、h. Some of the telecommunication services are used for control and protective relaying purposes and may be called upon to perform critical operations at times of power system faults. Even when critical services are not involved, special high-voltage protection may be required for both personnel safe
28、ty and plant protection at times of power system faults. Effective protection of any wire-line telecommunication circuit requires coordinated protection on all circuits provided over the same telecommunication cable. This standard presents workable methods for the electrical protection of wire-line
29、communication circuits serving electric supply locations through the use of neutralizing transformers. This project is part of a reorganization of IEEE Std 487 in which the main document is broken down into a family of related documents (i.e., dot-series) segregated on the basis of technology: 487 4
30、87.1 (Metallic wire-line) 487.2 (Optical fiber facilities) 487.3 (Hybrid facilities) 487.4 (Neutralizing transformers) 487.5 (Isolation transformers) Neutralizing transformers are considered a mature technology. Neutralizing transformers were used extensively and although there are many still in use
31、 today, they are usually no longer provided for new installations. For newer technologies, refer to IEEE Std 487.1, IEEE Std 487.2, and IEEE Std 487.3. This standard has been prepared by the Wire Line Subcommittee of the Power System Communications Committee of the IEEE Power and Energy Society. Thi
32、s standard represents the consensus of both power and communications engineers. Copyright 2013 IEEE. All rights reserved. ix Contents 1. Overview 1 1.1 Background 1 1.2 Scope . 2 1.3 Purpose 2 2. Normative references 2 3. Definitions 2 3.1 Definitions, acronyms, and abbreviations 2 3.2 Acronyms and
33、abbreviations . 3 4. Neutralizing transformer and neutralizing reactors operation 4 4.1 Three-winding neutralizing transformer 4 4.2 Two-winding neutralizing reactor . 5 4.3 Remanent voltage 8 4.4 Flux, remanent flux, and exciting current 9 4.5 Saturation 10 4.6 Recovery .10 4.7 Worst-case considera
34、tionsvolt-seconds and the applied voltage 11 4.8 Polarization of the neutralizing transformer or reactor core .13 4.9 Reduction of volt-time requirements from worst case 13 4.10 Paralleling neutralizing transformers or reactors 14 5. Protection application configurations 14 5.1 Protection configurat
35、ions employing neutralizing transformers .15 5.2 Protection configuration employing neutralizing in parallel with isolation on separate pairs 17 5.3 Protection configuration employing neutralizing in tandem with isolation 18 6. Installation considerations related to neutralizing transformers 20 Anne
36、x A (informative) Bibliography 23 Annex B (informative) Neutralizing transformer and reactor conceptdesign alternatives 24 B.1 Preliminary considerations .24 B.2 Standardized design method 24 B.3 Custom design method .25 B.4 Alternative simplified design .25 B.5 Number of good cycles approach .26 B.
37、6 Worst-case design considerations 27 B.7 Considerations for other than worst-case design 27 B.8 Typical specifications for neutralizing transformers 28 B.9 Use of dc blocking or ac exciting capacitors, or both 32 B.10 User information required for preparing a neutralizing transformer design specifi
38、cation .32 B.11 Neutralizing transformer installation design examples 35 Annex C (informative) Typical neutralizing transformers 40 C.1 Single-pair neutralizing transformers .40 C.2 Multi-pair neutralizing transformers 42 Copyright 2013 IEEE. All rights reserved. 1 IEEE Standard for the Electrical P
39、rotection of Communication Facilities Serving Electric Supply Locations Through the Use of Neutralizing Transformers IMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, health, or environmental protection, or ensure against interference with or from other devices or network
40、s. Implementers of IEEE Standards documents are responsible for determining and complying with all appropriate safety, security, environmental, health, and interference protection practices and all applicable laws and regulations. This IEEE document is made available for use subject to important not
41、ices and legal disclaimers. These notices and disclaimers appear in all publications containing this document and may be found under the heading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.” They can also be obtained on request from IEEE or viewed at http:/stan
42、dards.ieee.org/IPR/disclaimers.html. 1. Overview 1.1 Background Wire-line telecommunication facilities serving electric supply locations often require special high-voltage protection against the effects of fault-produced ground potential rise (GPR) or induced voltages, or both. Some of the telecommu
43、nication services are used for control and protective relaying purposes and may be called upon to perform critical operations at times of power system faults. This requirement presents a major challenge in the design and protection of the telecommunication system because power system faults can resu
44、lt in the introduction of interfering voltages and currents into the telecommunication circuit at the very time when the circuit is most urgently required to perform its function. Even when critical services are not involved, special high-voltage protection may be required for both personnel safety
45、and plant protection at times of power system faults. Effective protection of any wire-line telecommunication circuit requires coordinated protection on all circuits provided over the same telecommunication cable. IEEE Std 487.4-2013 IEEE Standard for the Electrical Protection of Communication Facil
46、ities Serving Electric Supply Locations Through the Use of Neutralizing Transformers Copyright 2013 IEEE. All rights reserved. 2 1.2 Scope This standard presents engineering design procedures for the electrical protection of communication facilities serving electric supply locations through the use
47、of neutralizing transformers. Other telecommunication alternatives, such as radio and microwave systems, are excluded from this document. 1.3 Purpose This standard presents workable methods that can be used with greater reliability to improve the electrical protection of communication facilities ser
48、ving electric supply locations through the use of neutralizing transformers. 2. Normative references The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to
49、 this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies. IEEE Std 487-2007, IEEE Recommended Practice for the Protection of Wire-line Communication Facilities Serving Electric Supply Locations.1, 2IEEE Std 789, IEEE Standard Performance Requirements for Communications and Control Cables for Applications in High-Voltage Environments. 3. Definitions 3.1 Definitions, acronyms, and abbreviations For the p
